15Chapter 2. Getting Started the BHT-4000 and System Mode2.2 Components and Functions• Bar-code ReadingWindow• Connector CoverPull out the end markedwith 3 . The direct-connect interface portwill be exposed.• Liquid Crystal Display(LCD)Shows the charactersand graphic patterns.• Function KeysUsed to select functions.• Trigger SwitchPress this switch to startbar-code reading.• Reading Confirmation LEDIlluminates in green when theBHT-4000 has successfullyread bar codes.• Numerical KeysUsed to key in data.• Neck Strap (option)Enables you to wear theBHT-4000 in easy reach.• Battery CartridgeMain power source ofthe BHT-4000.• Battery Release ButtonPress this button to removethe battery cartridge.• Hand BeltPut your hand through toprevent dropping.• Optical Interface PortUsed to exchange datawith the host computervia the optical communi-cations unit CU-4000.
